Anthracnose Risk After Summer Stress: After a summer of prolonged dry weather, grass plants have experienced extreme droughts, and greenkeepers are reminded to act now before disease onset this autumn.
Dr Colin Mumford, Bayer technical manager, explains that stressed turf is more likely to be affected by diseases such as Anthracnose, foliar blight and Anthracnose basal rot.
“Grass swards are struggling to recover following this summer’s extreme weather conditions, making them more susceptible to disease. If weather conditions are cool and damp going forward you’ll be more likely to see disease outbreaks,” he says.
“Anthracnose is known as a low nitrogen disease so it’s essential to monitor plant nutrition regularly to keep your grass plant in the best condition. You can do this by looking at grass clippings when mowing greens or taking soil or tissue samples and applying correct nutrients if required.
“However, if conducive weather conditions prevail, I’d advise greenkeepers to treat turf preventatively to stop disease from establishing, using a dual action fungicide such as Dedicate (tebuconazole and trifloxystrobin).
“As well as helping to reduce the impact of scarring, treating turf preventatively will minimise the effect of Anthracnose, in turn leaving you with a healthier grass plant that’s able to withstand other disease stresses like Microdochium Patch,” says Colin.
Following the loss of iprodione, Colin recommends that greenkeepers use an integrated approach to combat disease. This should include both cultural and biological controls as well as fungicides if required.
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